Method of and apparatus or mill for rolling or forming car-wheels or other circular bodies.



L. F. DlETER.

MEIHOD OF AND APPARATUS on MILL Fen ROLLING on FORMING CAR WHEELS onOTHER CIRCULAR BODIES.

APPLICAIIOH mm oer. 9. 19M.

Patented Oct. 21 1919.

I4 SHEETS--91! r r V r L F. DIETER. METHOD OF MB APARiTus 0H MILL FOR90mm; 08 mamme cm WHELS 03 OTHER CIRCULAR BODIES.

APPLICATION min 00?. 9. I911.

Pntcntml Oct. 21, 1919.

l4 SHEETS- SHEET 2.

m amk k L. F. DIETER.

METHOD OF AND APPARAIUS OB MILL F03 ROLLING 0R FORMING CAR WHEELS OROTHER CHHJULAB BODIES.

APPucafleu min act. 9, I917.

Patented Oct. 21, 1919.

I4 SHEETSSHEET 3.

' L. F. mum.

Minion or we APPARATUS on m 2H. F03 ROLLING 0R FORMING CAR WHEELS OROTHER CIRCULAR BODIES. Avmcman man 001.9. nu.

.Patent ed Oct. 21,1919. J u satin-snare.

man. 7 Y

V H 424a WHEELS-0R ornsa Bums;

OCT- 9- l9"- Hf k V Patented Oct. 21.1919. w L 7 14 "EITS-SHEET ii A yL. F. DIETER'.

mamas or AM] APPARATUS o3 um'rgl; mums on rp'amjh'a'sm wil szig on otmznv V V L. F. METER. MEIHOII 01- um mmms'on mu FOR mums on romancecmwuauson 01mm a h .J J.

25m Oct. 21,1919.

GROULAB BONES. Y hi0! mm o'cT. 9.11m.

7 ha miujgsflsiiimeon sonmni 'cin WHEELS 0n OTHER APPHCATION man 'oc'r.s. m1. Patented Oct. 21 1919.

l H SHEETSSHEEI II).

V L. F. DIETEB. Minion or M0 APPARATUS 0R mu. FOR noums on FORMING canwnsas OR OTHER CIRCULAR BODIES.

APPLICATION fIlED OCT. 9. I9.

Patented Oct. 21,1919.

- H SHEETS-SNEEI ll.

V L. r. DLETER. METHOD OF AND AP 'PABHUS OR IMLL FOR ROLLING 0B FORMINGOAR WHEELS OR OTHER CIRCULAR BODlES.

APPLICATION FILED OCT. 9. 39!?- Patented Oct. 21 u aunts-sun 2. 2.145466 UNITED STATES PATENT OFFICE.

reins r. mama, or serrate, new some I v lemon or m runners on MILL FOBsome on. resume canon omen. omcumn norms.

' To all whom it may concern:

. Method of and A paratus or Millfor- Rolling or Forming lar Bodies, ofwhich the following is a s i. 'fication accompanied by fourteen sheetsof her 11, 191

drawings formm rt of this specificatio- The features ci my inventionclaim dd herein are related to the invention of my original agplicationfor patent filed June 15 1911, Sen No. 633,343, Patent No. 1,243,050.

This application is. a continuation of mysaid original application, and,for carrying out my invention I refer to use an'apparatus or mill suchor instance as shown and described in my said original application withthe exception of the modifications in operations and parts thereofherein. shown and described, otherwise 'the connecting parts of such anapparatus or mill shown in the accompanying drawings are illustrative ofof my said ori 'nal application.

0 subject matter of t is invention is also partly described in andcertain features of the invention herein described, but not hereinclaimed, are claimed in my following applications, viz: said originalagiplication for patent filed June 15, 1911, erial No. 633,3-13, PatentNo. 1,243,050; a plication for patent filed October10, 191 Serial No.124,921, Patent No. 1,243,051; application for patent filed November 20,1916, Serial No. 132,372, Patent .No. 1,243,052; agplication for patentfiled November 22, 1916, eria-l No. 132,815, Patent No. 1,243,053;pplication for patent filed January 10, 191 Serial No. 141,558, Patent'No. 1,246,067; aaeplication for patent filed June 22, 1917, l rial No.176,333; application for patent filed Octo- Serial No. 195,922;a-pglication for patent filed November 9, 1917, erial No. 201,036;application for patent filed November 9, 1917, Serial No. 201,155.

This invention relates to a novel and useful method or process and meansfor the manufacturing or the making of rolled cal wheels, disk-wheels,or other circular bodies from properly heated ingots, blooms, blanks orother work-pieces. y

In my said original application, the car wheel or other circular bodyis' centrally Specification of letter: Patent.

colfllmltiqll. of lppliceflon Ber-kl m). seam, new: 15,1011: run

Eerie! in. 1mm.

rWheels or other Circu Patented Oct. 21, 1919. application flied oa me,1011.

pierced or penetrated or centered and is rolled or. ed by mils operatinginst the opposite sides and against the erip and face of the work-pieceand is dis ed while the work-piece is mtatedby said .rolls.

Applicant 1; aware thatv heretofore it has pro sod to roll car wheels ona form: in -die a to confermto the center or hu part, e' web part andthe rim part at one entireside of the car wheel to be formed and alsoconform to the outer or peripheral face of the car wheel, the car wheelbemg rolled on its other side only; that is, at one side of its web andat one side of the edge of its rim. During such rolling action, awork-piece of a given diameter will be rolled to much larger diameterand to the form of a car wheel, such larger diameter being determinedand governed by said forming-die. With such an arrangement, the metal inthe workiece is not worked at its outer peri hera l, face and thereforewill be extended insteadof comthe tread or outer perip of the car wheel.

In this invention the car wheeler similar circular article is firstformed by combmed roll-forging and die-fol" 'ng means into undished formand is dished while the same revolves, or left undished, it beingpierced or penetrated or centered and rolled at one side, therebyforcing metal of the work-piece against the forming-die, against or overa center or Hiercer ssed axially throu h said formingie or ormedintegral wi into the depressed portion or rtions of said die, and alsobeyond an over the peripheral edge of said die, the actual formmg.ortion of the preferred forming-die reac i only to the inner peripheralface of the rim of the car wheel or other article at one side thereofwhen finished and being shaped to conform to thecenter or hub part andthe web part and the inner peripheral or inner circumferential face ofthe rim portion of the finished rolled or formed car wheel or othercircular body at one side thereof; all other portions or surfaces of thecar wheel or other body bein rolled or formed directly by rolls and. tas car wheel or other circular body being dished while the same revolvesor being left undished. all as said die, and

in the manner hereinafter shown and a whole car wheel may. be completelyrolled pr formed and1 bile1 dishied or bilnot dit'slhedfi roma ro'peryeate t. oom an. or other work-piece, incllil? and thoroughly practicablemanner with the same heat'and before the finished rolled and dished'orundished wheel, as the case ma be, is removed from theapparatus or miwhile at the same time securing a uniform and maximum densit andhomogeneity in the metal therein, wluch contributes mateii ally to thestrength and durabilit thereof.

For instance, the metal, when being rolled or formed fronra blank orother workeice into alcar-wheel or ,other circular. 0 feet according tom invention, is not expanded radially; es ecially is this avoided in thework-piece is truly rolled or-formed'and insurface consistin trend andange or rim portion and therefore there is no ossibility ofthe formationof incipient crac in the tread "and flange portion or in the peripheralface of the rim. With my invention the metal in the creases in densitywith increased working, thus giving to the metal both its'due maximumstrength and maximum to wear. In other w'ords,'this invention of rollingor forming produces the same effect in the metal of the rim portion asif the web portion. of the wheel were not in existence and the rimortionrolled or formed its totalwidth on its inner peripheral surface orsurfaces, as is done on its outer ripheral of the tread an flan Afurther ob ect of my invention 15 to provide method and means ashereinafter described by which a properly heated ingot, bloom, blank orother work-piece may be centered, or ierced, or penetrated and can;tel-ed, or hot 1 centered and pierced ,or penetrated at one or bothsides and also supported, and therefrom, with the same heat and in thesame apparatus or mill, at car wheel or other circular article may becompletely rolled or formed. By such means and method as herein shownand described, the time 1 aired in so produci car wheels or othercircular articles is mub fi lessened and the cost of making such wheelsor other articles is enormously reduced.

In carrying out this inventioit'l employ means during the 0 ratingprocess a the workpiece if t e workiece wo d be-' by means of V screwsor similar mechanism. To a id mg the piercing, or penetrating, orforming at. the'xopposite sides of the work-piece of a rudimentary;bore, or a part or parts thereof, in a simp a "continually cl that is tosay, for instance, the metal in a .properly heated workpiece is verysoft in comparison with themetal in its normal .015 cold condition andtherefore has not required resistance, which is absolutely neefor firmlysupporting the work-piece, and-on which 'accpuut the work-piece willloose between or on its supportm centrally supported or hel this, I putthe work-piece automatically ped condition suppilmng centrally againstthe work-piece, which mst 3 t is e by applying pressure pressure actscontinually and automatically against the work-piece from op ositesides. work-piece orswheel, whi e centrally supported by its supportingmeans, is therefore, also automatically put into clamped condition,whichi-prevents the hub or center portion -of the workpiece frombecoming oose on its supporting means and from being forced out of itstrue axial or central and desired lateral positions with respectto therim rtion-of the work-piece or wheel during t e rolling or operatingprocesses, &0. aid constant clamping force or constant clamping pressureautomatically and continually remains during said operating processes,and for moving the hub or center portion of the ,work-piece axially ineither. direction while the same is so supported and "as firmly clamped,all as hereinafter fully described and also described in my said orfinalapplication. a

other object of my invention is the provision of a novel method andmeans for completely centering or piercing or penetrating and supportingproperly heated ingots, blooms, anks or other work-pieces and rolling orforming and dishing the work-piece to desired form while so supported;for rolling, formi or shaping it uh on a workpiece where y the hub 18formed smooth on all its surfaces to its desiredform or shape withoutleaving a raised portion or fin which would have to be removed afterwardby turning or other costly means; for rolling or formin the innerperipheral face or faces of t e marginal or.- rim ortion of a work-pieceor wheel suflicien y inclined outward y toward the outer peripheral,face of the workiece or wheel, as andv for the purpose hereinafterdescribed and also as described in my said original application forrolling of the total erlpheral face of the work-piece or wheel rst tobeaked form,

plic-ation,

ripheral face to desired finished form without leaving a ralsed portionor n as and for the purpose hereinafter described and also describe inmy said original apand then rolling the so beak undisliihg or redishingcar wheels or other circularobjects while rotating; for rollin metalfromfthe rim ortion onto the we portion during the rol inganddishingprocess'; for centering a wor piece and sizing and compressingthe hub while in pro erly heated condition; and, for decreasing t ediameter of the bore in a wheel or other circular work-piece byismetrically compressing the metal of the hub portion of the work-piece.

Further objects of my invention are to rovide a novel method and meansfor'rollmg or forming a car wheel or other circular, or approximatelycircular, work-piece sb as to cause metal in the same to flow in lateraland radial lines, or substantially so, for the purpose offorminsuccessively or alternately the web, the car wheel or otherwork-pice; for limiting the lateral flow of metal at the hub or at themarginal or rim portion or at both said I huh and rim Kortions; for 1-0ling the peripheral face or anged tread of the rim portion of said carwheel or other workwoe to true circular form and thereby aso uniformlycondensing the metal in said rim portion to maximum? for retelling,reforming or reworking a car wheel or other similar object; and, forutilizing car wheels or reworking the same to form other'circularobjects therefrom. i

A still further object of my invention is to provide a method and anapparatus or mill wherein means or devices are systematically arranged,whereby car wheels, disk-wheels;

ipe flanges or other circular or SLflBlil-I' dies or articles ma berolled'or formed and dished either wit use of the formingdie and all therolls, or for instance with use only of the forming-die, the hereinnamed ed ing and web ro ing roll, the edg ing and ie-supporting roll andthe'tread or face rolling roll; or, with use only of tlie formin die,the herein named web rolling roll, the edgingand die-su aperting roll,the tread or face rollin ro l and tread or face finishing roll; or, wituse only of the forming-die, the heroin named web finishing roll, theherein named die-supporting roll, and the trend or face finishing roll7. or, with use only of the forming-die, the

which ma portion 'thereo device. the roughing mill or the roughing sideof the ab andthe rim of said edging and rolling or for-min with eitherthe formingdie and all the ro ls, or only with the formingdie and any ofthe combination of rolls above mentioned. The various parts are' soarranged thatsaid apparatus or mill actually consists of two mills madein one, each of g be 0 erated and used separatel or indepen ently of theother mill, whic other mill will not, in such case used. Said two millsare located one at each side of the axes or extended axes of thepiercers or work-supporting centers and dishing One of said mills isherein named apparatus or mill, alt-hon h car wheels, diskwheels, pi eflanges or ot ier articles may rolled or ormed therewith to the finish,and consists of the forming-die. the herein named edging and ,nvehrollin roll, the edging and die-supporting roll and tread or faceroughing roll. The other of said two mills is herein named the finishingmill or finishing side of the apparatus or mill and consists of the.

forminglie, the herein named web finishing roll. the dic-supportingrolland tread or face finishing roll. The centering or the piercing andcentering and the work-supporting and dishing device and also theraismg, lowering and retaining device shown and described in my saidoriginal application are all located at the center and between said twomills and may all he used with either ofsaid two mills or with the wholesip aratus or mill, as the case may be.

n the manufacture of car wheels or other circular objects according to mthe cost of operation is great y reduced. The production of car wheelsand the like is thereby greatly cheapened, the output increased, and themetal, for instance, in the trend and flange or the peripheral face andthe whole rim portion of car wheels is rolled and isthereby uniformlycondensed to its maximum or substantiall so, thereby giving the metal insaid perip ieral face and rim portion its due maximum and uniformstrength and its due maximum and uniform resistance to wear, and therebythe said peripheral face and rim portion of the car wheel is also rolledsmooth on all its surfaces to the desired form or shape without leavinga raised circular portion or fin which woul have to be removed afterwardby turning or other costly means.

It is, of course, understood that the various steps herein described mayall be performed, in accordance with my invention, in the same apparatusor mill with one heat, or

invention,

each of said steps may be efi'ected with a separate heat treatment ofthe work-plece and separate operation, as for instance described in mysaid original application. I It will however, be apparent that any stepor o eration may be completed performance of any other etc may berequired, but it is to that all the steps of my method herein .describedare necessary in the manufacture of a co lete car wheel or other similarbody to em dy therein all the advantages of my invention. Furtherobjects of the invention will hereinafter appear. I

My invention consists in the novel method or recess herein described andmore particu arly pointed out also consists inthe novel means, in thearrangement thereof, in the novel features of construction and 1n thecombination of parts herein described and more particularly pointed outin the claims.

I prefer to carry out my invention with an apparatus or mill of the typeor kind as for instance described and claimed in my aforesaid originalapplication and in applications filed by me and having the heroinbeforementioned serial numbers and filing dates, as will be made clearhereinafter.

In the accompanying I illustrate my invention to vices or means I preferto e ing out my invention: I

Fi ure 1 is a sectional plan view illustrating t 1e main operating partsof one form of an apparatus or mill, such as I prefer to employ forrollin or forming car wheels or other circular bodies, and such asforinstance shown and described in my aforesaid original ap lication,with the exce tion for instance 0 said forming-die am of themodifications of one or both work-supporting headsand of rolls whichalso support said forming-die and of the modifications of details and ofthe modifications of operations, &c.. all as hereinafter more fullyshown and described. The workiece is not shown in said Fig. 1, but thewor -piece will be placed near or against said forming-die and betweenthe piercers or work-supporting centers as hereinafter fully shown anddescribed.

Fig. 2 is a side elevation of one of the oscillating frames; that is,the oscillating frame for the roll shaft having said edging and webrolling roll shown in Fig. 1, and shows the manner of supporting,niding, positioning, shifting and driving said shaft.

l ig. 3 is a plan view of a portion of the said edging and web rollingroll shaft with its roll. a portion of its so porting means and the gagerods, of whic in this figure three are shown, whereby the radial posiorsteps, as

ther with deploy in carryto partly roll or orm the work-piece and laterbe operated upon in the understood in the claims; and it arrangement anddrawings, in which .supported thereby, ported on one of said pierccrs orcenters, and

tions of saidroll against the work: iece and the range of movement ofsaid rol radially with respect to the work-piece are determine ashereinafter described and also described in my said originalapplication.

Fig. 4 is a cross-sectlon taken on line 4-4, Fig. 3 looking in thedirection of the arrows at said line.

Fig. 5 is a sectional plan view of a modified orm of the. main operatinparts of the apparatus or mill shown in; fi lg. 1. The work-piece is notshown in Fig. 5, but the workiecewill. be placed near or against saidorming-die and between the pzercers or work-supporting centers, ashereinafter fully shown and described.

lugs. 6, 7 andzB are sectional plan views of a portion of one form ofthe apparatus or inillshowing my method and device for centering or.for'piercing or penetrating and centering, for re ling, and or dishing,for instance, flanged car wheels; therein an ingot, bloom, blank orother work-piece may also be centered or pierced or netrated andcentered and rolled and dished with the use of the forming-die and withall the rolls of the a aratus or mill as herein shown and decor: ed, andthe releasin of the work-piece or finished product, all as hereinafterfully described.

The parts shown in Figs. 9 to 16 inclusiv are n'lodifications of thoseshown in Figs. 6, 7 and 8, as hereinafter fully described.

Figs. 17 to 24 inclusive, for instance, illustrate somewhat modifiedforms of the apparatus or mill illustrated in the Fi 1 to 16 inclusive,as hereinafter describetf Fig. 25 is a sectional side elevation, onenlarged scale, showing the adjacent ends of the supporting heads,thepieroers or centers the forming-die supsome of the rolls; therein isalso shown a work-piece rolled or formed and dished to the finishedrolled and dished form of the dished car wheel shown at F.

Fig. 26 is a, similar sectional side elevation, showin one of thesupporting heads provided wit roller-supports acting against or incontact with the marginal portion of the formin -dietherein is shown aworkpiece rolle or ormed to the finished form of the nndished car wheelshown at F.

Fig. 27 is a sectional end view of one of said roller-supports togetherwith its bracket.

Fig. 28 is a sectional. view taken on line 2828, Fig. 27, looking indirection of the arrows at said line.

Fig.- 29 is a horizontal section through part of the su )porting axleand the inner end of one oi the supporting heads, as shown and describedin plication.

Figs. 30 to 41 inclusive illustrate. on onmy said original aplargedmoving or operating one of the supporting axles together with itspiercer or center independent of its supporting head, or for moving saidsupportin hea together with the supporting axle and its piercer orcenter, as hereinafter fully described.

Fig. 42 is a plan view of Fig.43.

Fig. 4.3 is a sectional view throu h line 4343, Fig. 42, showin theforming-die in diamctral section and t 1e parts'shown are inv properposition to receive a workiece, as hereinafter fully described. In thisgure the piercer or center is longitudinally moved together with itssupporting head, as indicated b the dotted line.

Figs. 44 an 45 are similar sectional views as Fig. 43 and show difierentforms of'the forming-die and rolls associated with the forming-die.

Fig. 46 is a sectional view showing the forming-die and the work-pieceor fimshed product in diametral sections. In this fi re is shown arolled or formed and dished iskwheel or center such as used forinstancein tired car wheels; otherwise this illustration is similar totheillustrationinFig. 18. Said disk-wheel or center is rolled or formedwith the forming-die, one of the herein nam edging and web rollingrolls, one of the herein named edging and dieesupportm rolls, and asingle face roll as own, an it is dished into the fgrm shown, as and inthe manner hereinafter described.

' formed with the forming-die,

Fig. 47 is a sectional view similar to Fig. 46. In this figure is showna rolled or formed and dished car wheel similar to Fig. 20. Said dishedcar wheel is rolled or herein named edging and web rolling rolls, one ofthe herein named edging and die-supporting rolls, a face rollin roll,and a face finishing roll as shown, an it is dished into theform shown,as and in the manner hereinafter described.

Fig. 48 is a similar sectional view. The

' dished car wheel shown in this rolled or formed with figure is theforming- 'e, one of the herein named web finishing rolls, one of theherein named die-supporting rolls, a face rolling roll, and a facefinishing roll as shown and as hereinafter de 4 scribed.

Fig. 49 is a similar sectional view; in this figure is shown a rolled orformed and dished car wheel similar to Fig. 24. Said dished car wheel isrolled or formed with the forming-die, one of the herein named edgingand web rolling rolls formed wholly conical as shown, oneof the hereinnamed edging and die-supporting rolls, one of the herein named webfinishing rolls, one of the herein named die'supporting rolls, a facefinishing roll, all as shown; and it is dished, as hereinafterdescribed.

scales the device for longitudinally one hi the and FigfBO is a similarsectional view as the one shown in Fig. 43 with the exception that inFig. 50 the supporting axle with its piercer or supporting center islongitudinally moved or operated independent of its supporting head.

igs. 51 to 67 show sectional views illustrating various combinations anddifl'erent forms of rolls, piercers or centers, and forming-dies. Thesefi illustrate, in accordance with my invention, certain piercing orcentering or supporting steps and formin or rolhn and forming steps forproducing the di ed car wheel shown for mstancejn the Fig. 54, 57, 61,63 or 67, or other figures, as hereinafter described.

Fig. 68 is a sectional view showing a portion ofanother form of theforming-die and the centering orsupporting means. Therein is shown onlythe center portion of both the work-piece and forming-die.

Fig. 69 is a sectional view showing the central portion of thework-piece provided with a arge central opening and still another formof centering means in which the centering element at one side of theworkpiece is in 2.1 with the formin -die. Therein is also shown only thecent portion of the forming-die.

Fig. 70 is a sectional view showing ,the central portion ously formed asshown and provided with central depressions or pockets into which thepioneers or centers are to be penetrated or entered, one of saidpiercers or centers geing shown slidable within the forming- 1e. portionof the forming-die.

' Fig. 71 is a sectional view showing the central portion of theworkiece provided 'with an axial or a proxima y axial opening andshowing ifierent forms of centering elements at opposite sides of theworkpiece, the centerm element at one side bemg in the form 0 a pierceror center and the other being in the form of a formingdie which aisoservesin forming a hub portion onto the work-piece and which forming dieis keyed or otherwise securel fastened to the work-sup rting axle. ereinis also shown only t o central portion of the forming-die.

Fig. 72 is a sectional view showing a work-piece reviously formed asshown and placed on t e forming-die and, also showmg the centeringmeans. Therein is shown of the work-piece p i- Therein is also shownonly the central only the central portion of both the workbeing shownwith th hub bored. In Fig.

77 said car wheel has its web formed in undished position; that is, atright angles with the axis of. the wheel, but the hub of I invention,

this wheel is not formed central to the web but is formed into theposition required of a dished wheel, that is, the hub is in the sameosition as is the hub in Fig. 76. In Fig. F8 said car wheel is shownundished.

Figs. 79 to 82 illustrate; according to my certain piercing and rollingor forming steps for producing the dished car wheel, for instance shownin Fig. 82, all as hereinafter described.

Fig. 83 is a sectional view showing side rolls substituted for theforming-die and its coacting rolls, whereby with the mistance of therolls on the opposite side, the car wheel may be dished, or dished androlled afterbeing rolled or instance shown in Fig. 81.

Fig. 84 is a sectional view showing a workpiece provided with an openingsomewhat off-center and illustrating the method of piercing orpenetrating the work-piece centrally, regardless of the position of theopening therein.

Fig. 85 is a diametral section of the com-' pletely rolled or formed anddished car wheel of Fig. 82 taken 86, showing the inner the rim at oneside of t 1e work-piece formed to a different angle than the innereripheral surface at the otherside thereof.

Fig. 86 is a fragmentary plan view of the completely finished car wheelof Fig. 82, rolled or formed in accordance with my inon line 85-85, Fig.ripheral surface of 4 vention herein described.

to the ones s Fig. 87 is a diametral section of a car wheel completelyrolled or formed and dished in accordance with m invention hereindescribed and showing t e inner peripheral face of the rim at one sideof the car wheel formed to the same angle as the inner peripheral faceat the other side thereof.

Fig. 88 shows sectional view similar to Fig. 43 or Fig. 50 with theexception that the die-supporting portion of the side rolls and theforming-die in Fig. 88 are formed somewhat diiferent.

Figs. 89 and 90 show the inclination or angle of the peripheralforming-edge or face of the forming-die somewhat different, the operatinprocess or steps being similar own in Figs. 79 to 82.

Figs. 91 to 94.- inclusive, illustrate, according to my invention,certain rollingor forming steps in rolling or forming the finishedrolled undished car wheel shown in Fig. 94, all as hereinafterdescribed.

Figs. 95 and 96 illustrate, according to my invention, certain rollingor forming steps in rolling or forming the dished disk different formsof piercers formed to the form for tired car w piercers or centersformed as shown, and with allathe rolls, of which each is formed asshown, and ashereinafter described.

Figs. 97 and 98 illustrate, for instance, certain steps according to myinvention for reworking or rerolling a car wheel, includingjhe reworkingof its hub portion.

igs. 99 and 100 show, for instance, certain steps accordin to myinvention for rolling or formin disk-wheels, pipe flanges, or similarartic es from ingots, blooms, blanks or other work-pieces or forreworking car wheels or other circular objects into as hereinafterdescribed.

Fig. 101is a sectional view showing a different combination of rolls,combined with 01' centers. Therein is shown the forming-die driven bygear teeth formed thereon meshing with the teeth formed on the edgingand die-supporting .roll, which is positively driven from its shaft.

section taken on section taken on line 104, Fig. 103.

Fig. 105 is an enlarged sectional view showing in detail the sup ortinthe. formingdie and tie rol s therewith shown in Fig. 5.

Fig. "106 is a sectional elevation of the same;

Fig. 107 is an end view with the'piercer or'centcr and forming-dieremoved and the su porting axle shown in section. igs. 108 and 109 showin detail the spindles or supporting the die-supporting ro'lls shown inFig. 105.

Figs. 110 and 111 illustrate dia rammatically improper flow of metalresufiing from improper working of the metal in 'the rim portion of acar wheel or other circular object having a web, during the formin ofsaid rim portion, all of which is avoide b my invention, as hereinafterdescribed and also described in my said original application.

Fig. 112 illustrates, for instance, the proper flow of metal during theforming of a tire havin no web, such as used for some ieels, ashereinafter described and also described in my said originalapplicoacting I cation.

Figs. 113 and 114 are diagrammatic illustrations showing the result ofthe rolling or forming-of the rim of a car wheel in accordance with myinvention as hereinafter described, and also described in my saidoriginal application.

Figs. 1.15, 116 and 117 are similar diameans for disk-wheels, pipeflanges or similar articles

